cp: add -v, fix manpage info

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>

cp.1

@@ -8,7 +8,7 @@ cp \- copy files and directories
 .RI [ name ]
 .P
 .B cp
-.RB [ \-adpRr ]
+.RB [ \-adpRrv ]
 .RI [ file ...]
 .RI [ directory ]
 .SH DESCRIPTION
@@ -25,7 +25,7 @@ Implies \-d, \-p, \-r.
 don't dereference links. preserve links.
 .TP
 .B \-p
-preserve mode, timestamp, links and permissions.
+preserve mode, timestamp and permissions.
 .TP
 .B \-f
 if an existing destination file cannot be opened, remove it and try again.
@@ -36,3 +36,7 @@ equivalent to -r.
 .B \-r
 copies directories recursively.  If this flag is not specified, directories are
 not copied.
+.TP
+.B \-v
+print names of source and destination per file to stdout. In the format:
+"source \-> destination".

cp.c

@@ -8,7 +8,7 @@
 static void
 usage(void)
 {
-	eprintf("usage: %s [-adfpRr] source... dest\n", argv0);
+	eprintf("usage: %s [-adfpRrv] source... dest\n", argv0);
 }
 
 int
@@ -36,6 +36,9 @@ main(int argc, char *argv[])
 	case 'r':
 		cp_rflag = true;
 		break;
+	case 'v':
+		cp_vflag = true;
+		break;
 	default:
 		usage();
 	} ARGEND;

fs.h

@@ -6,6 +6,7 @@ extern bool cp_dflag;
 extern bool cp_fflag;
 extern bool cp_pflag;
 extern bool cp_rflag;
+extern bool cp_vflag;
 
 extern bool rm_fflag;
 extern bool rm_rflag;

util/apathmax.c

@@ -22,4 +22,3 @@ apathmax(char **p, long *size)
 	if(!(*p = malloc(*size)))
 		eprintf("malloc:");
 }
-

util/cp.c

@@ -20,6 +20,7 @@ bool cp_dflag = false;
 bool cp_fflag = false;
 bool cp_pflag = false;
 bool cp_rflag = false;
+bool cp_vflag = false;
 
 int
 cp(const char *s1, const char *s2)
@@ -39,6 +40,9 @@ cp(const char *s1, const char *s2)
 	else
 		r = stat(s1, &st);
 
+	if(cp_vflag)
+		printf("'%s' -> '%s'\n", s1, s2);
+
 	if(r == 0) {
 		if(cp_dflag == true && S_ISLNK(st.st_mode)) {
 			if(cp_fflag == true)
@@ -86,7 +90,6 @@ cp(const char *s1, const char *s2)
 			free(ns1);
 			free(ns2);
 			goto preserve;
-			return 0;
 		}
 	}
 	if(!(f1 = fopen(s1, "r")))